PLR PRECISION LOW PRESSURE REVERSE BUCKLING

The Oseco PLR offers extremely low burst pressures in an all-metal design. The armored construction of the PLR protects the disc from damage that affects the performance of the other low-pressure rupture discs.

The PLR is excellent for use in protecting and isolating safety relief valves. Due to the large opening characteristics, in some sizes an extended outlet holder may be required when installed directly under an SRV.

The PLR is Oseco’s low-pressure, reverse-buckling

rupture disc.

• Excellent service life in high-cycle applications

• Damage-resistant due to unique armor construction

• Ideal for safety relief valve isolation

• Excellent for gas or liquid service

• Non-fragmenting design

• Withstands full vacuum

• Standard materials of construction: 316 Series Stainless Steel, Nickel, Inconel® 600, Hastelloy® C, and Monel®

Sizes 1” - 12”

Operating Ratio 90%

Manufacturing Range 0%

FLOW DIRECTION

Let us help you with all your pressure relief questions.

Call us at (800) 395-3475 or email us at info@oseco.com.

www.oseco.com

PLRTechnical Specifications

Related ProductsSENSORSSVTAMS

HOLDERS PRDIPRDI-PPRDH

REV

ISIO

N 0

8.14

.20

+/-10% at or over 40 psig

+/-3 psig from 5-40 psig

+ / - 1.5 psig below 5 psig

Burst Tolerance

PLR Min/Max Burst Pressure @ 72o F (psig) / 22o C (barg)

SIZE inches(metric) MATERIAL MIN psig

(barg)MIN WITH LINER

(barg)MAX psig

(barg)

1"DN 25

316NIIncMon

Hast C

12 (0.8)12 (0.8)13 (0.9)11 (0.8)12 (0.8)

17.5 (1.2)

91 (6.3)60 (4.1)56 (3.9)80 (5.5)100 (6.9)

1.5"DN 40

316NIIncMon

Hast C

9 (0.6)7 (0.5)10 (0.7)6 (0.4)19 (1.3)

11 (0.8)

132 (9.1)77 (5.3)116 (8.0)104 (7.2)165 (11.4)

2"DN 50

316NIIncMon

Hast C

6 (0.4)8 (0.6)8 (0.6)6 (0.4)9 (0.6)

8 (0.6)

92 (6.3)50 (3.4)60 (4.1)67 (4.6)118 (8.1)

3"DN 80

316NIIncMon

Hast C

3 (0.2)4 (0.3)4 (0.3)3 (0.2)4 (0.3)

6 (0.4)

64 (4.4)35 (2.4)45 (3.1)42 (2.9)96 (6.6)

4"DN 100

316NIIncMon

Hast C

2 (0.1)3 (0.2)3 (0.2)2 (0.1)3 (0.2)

4.5 (0.3)

65 (4.5)39 (2.7)35 (2.4)50 (3.4)91 (6.3)

6"DN 150

316NIIncMon

Hast C

2 (0.1)

3 (0.2)

50 (3.4)29 (0.2)40 (2.8)49 (3.4)78 (5.4)

8"DN 200

316NIIncMon

Hast C

2 (0.1)

3 (0.2)

50 (3.4)30 (2.1)40 (2.8)50 (3.4)75 (5.2)

10"DN 250

316NIIncMon

Hast C

Consult Factory Consult Factory Consult Factory

12"DN 300

316NIIncMon

Hast C

Consult Factory Consult Factory Consult Factory

*Fluorpolyer liner (PFA)Max Temperature @ 450o F

DISC SIZE(Inch)

NET FLOW AREA(Sq. Inch)

1 0.602

1.5 1.493

2 2.735

3 4.984

4 9.148

6 20.79

8 36

10 55.4

12 77.7

Free Flow AreaMinimum Net Flow Area (MNFA)

CertificationsPED 2014/68/EU